Sökning: "Jiahuan Lei"

Hittade 2 uppsatser innehållade orden Jiahuan Lei.

1. 1. An extended BIRCH-based clustering algorithm for large time-series datasets

   Master-uppsats, Mittuniversitetet/Avdelningen för informations- och kommunikationssystem

   Författare :Jiahuan Lei; [2017]
   Nyckelord :Time series; Data stream; Clustering; BIRCH; DTW; DBA.;

   Sammanfattning : Temporal data analysis and mining has attracted substantial interest due to theproliferation and ubiquity of time series in many fields. Time series clustering isone of the most popular mining methods, and many time series clustering algorithmsprimarily focus on detecting the clusters in a batch fashion that will use alot of memory space and thus limit the scalability and capability for large timeseries. LÄS MER

3. 2. Performance evaluation of interleaving techniques for IEEE 802.15.4 transmissions

   Kandidat-uppsats, Mittuniversitetet/Avdelningen för informations- och kommunikationssystem

   Författare :Jiahuan Lei; Qingbi Liao; [2014]
   Nyckelord :interleaving; Matlab; Reed-Solomon; TinyOS; WSN; FEC; MicaZ;

   Sammanfattning : In the wireless sensor network, the WLAN interference, multi-path fading andattenuation are the main reason for packets’ corruption. Forward errorcorrection is one of the methods for error mitigation. Many coding methods aredesigned to improve the reliability of wireless channel. LÄS MER